I have had many probs with voltages and am beging to think the CPU is causing this if it is possible. I have tried 3 diffrent PSU two antec 300w and a 400w. I have also tried two diffrent MB both K7N2 Delta-ILSR. I was wondering if there is any compatibility issues with the K7n2 and the XP2600+ 333FSB it is not listed on MSI web site as compatible but is on amd's